<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatr_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <el-form ref="loginFromRef" :model="loginFrom" :rules="loginFromRules" label-width="0px" class="froms">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginFrom.username" prefix-icon="el-icon-s-custom"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input v-model="loginFrom.password" type="password" prefix-icon="el-icon-lock"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginFrom">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 登录用户双向绑定
      loginFrom: {
        username: 'admin',
        password: '123456'
      },
      // 验证表单
      loginFromRules: {
        // 验证用户名
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 重置表单验证和清空表单
    resetLoginFrom () {
      // 通过ref获取到表单实例
      this.$refs.loginFromRef.resetFields()
    },
    login () {
      this.$refs.loginFromRef.validate(async vaild => {
        // console.log(bool)
        if (!vaild) return
        const { data: res } = await this.$http.post('login', this.loginFrom)
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登陆失败！')
        this.$message.success('登录成功！')
        // 将 token 保存到本地的sessionStroage中
        // 跳转页面
        sessionStorage.setItem('token', res.data.token)
        sessionStorage.setItem('name', res.data.username)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 20px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatr_box {
    width: 130px;
    height: 130px;
    background-color: #fff;
    border-radius: 50%;
    border: 1px solid #eee;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px #ddd;
    padding: 10px;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.froms {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
